The time he has devoted in the past years _____________ the disabled is now thought to be ________ great value __________ him.
| A．to help; of; for | B．to helping; of; to |
| C．to help; in; of | D．to helping; /; to |
–_________ is your home from your school? –It is only fifteen minutes by bike.
| A．How far | B．How often | C．How soon | D．How long |
–Would you mind _________ your voice down? We are doing our homework.
–Sorry for that.
| A．keep | B．keeping | C．to keep | D．kept |
–I always make mistakes in my math exams. What should I do?
–I think you should be _________.
| A．enough careful | B．enough carefully | C．careful enough | D．carefully enough |
My car went ______ fast and narrowly missed _______ another car.
| A．so; hit | B．too; to hit | C．too; hitting | D．very; hit |
--What did the teacher say just now?
--- The teacher told us _______ our hands before ______ the questions.
| A．to rise; answered | B．rise; answering |
| C．to raise; answering | D．raise; answered |